/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.pulsar.io.core;

public interface SourceContext {

    /**
     * The id of the instance that invokes this function.
     *
     * @return the instance id
     */
    int getInstanceId();

    /**
     * Get the number of instances that invoke this function.
     *
     * @return the number of instances that invoke this function.
     */
    int getNumInstances();

    /**
     * Record a user defined metric
     * @param metricName The name of the metric
     * @param value The value of the metric
     */
    void recordMetric(String metricName, double value);
}
